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hemx/PLAN.md
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2026-09-01 23:50:26 +02:00

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# PLAN
Current outcome: make Hemx internals easier to change without altering public behavior, generated contracts, diagnostics, or portability.
## HMX-M01 — Isolate template authoring validation
Outcome: template authoring validation is privately owned without public, diagnostic, ordering, or fingerprint drift.
Delta: architecture/001 assurance/001
Checks: `cargo test -p hemx-build`; focused contract/fingerprint/diagnostic checks; Redgate; diff check; fresh-context review.
State: Done
Blocked by: none
## HMX-M02 — Isolate Rust source fact extraction
Outcome: `hemx-build` Rust/syn fact collection has one private owner independent of template validation and emission.
Delta: architecture/002 assurance/001
Path: application Rust source -> syntax facts -> generated component/form/handler contract -> deterministic artifact.
Build: move the whole fact model, syn traversal, and related tests together; retain the existing host-only dependency boundary.
Risk: reordered facts or changed path handling alters generated contracts or fingerprints.
Checks: `cargo test -p hemx-build`; generated-contract semantic and fingerprint fixtures; Wasm target tree gate; `redgate check`.
Non-goals: replacing syn, changing generated vocabulary, or introducing a generic analysis framework.
Residual risk: overlaps `hemx-build/src/lib.rs`; implement after HMX-M01 to avoid conflicting movement.
State: Draft
Blocked by: HMX-M01
## HMX-M03 — Isolate artifact emission and diagnostics
Outcome: generated Rust, metadata, lowering tables, and contract diagnostics are emitted through one private boundary behind the public builder.
Delta: architecture/003 assurance/001
Path: validated template and Rust facts -> stable IDs/metadata -> generated files -> downstream compilation diagnostics.
Build: move artifact assembly and diagnostic formatting as one responsibility; keep public entry points and no-op write behavior in place.
Risk: byte, ordering, fingerprint, or diagnostic drift breaks downstream builds despite compiling locally.
Checks: `cargo test -p hemx-build`; exact generated API/diagnostic/fingerprint fixtures; no-op rewrite check; package archive checks; `redgate check`.
Non-goals: a new IR, new serialization, public API changes, or formatting-only rewrites.
Residual risk: this is the broadest movement slice and requires fresh-context review after integrated proof.
State: Draft
Blocked by: HMX-M02
## HMX-M04 — Localize Axum interaction forms
Outcome: the interaction-form boundary is privately owned without public extraction, decoding, limit, or rejection drift.
Delta: architecture/004 assurance/002
Checks: Axum interaction boundary suite; derive Form<T> spelling check; custom multipart typed extraction; Redgate; diff check; fresh review.
State: Done
Blocked by: none
## Closure
Run all repository-required Redgate, fmt, clippy, workspace test, license, Wasm graph, and package archive gates. Finish with a fresh-context blocker-only review against INTENT.tsv, SPEC.tsv, this plan, the actual diff, and proof outputs. Keep `hemx-core`, `hemx-js`, `hemx-derive`, and public package boundaries cohesive unless a later validated responsibility seam requires change.